基于预测式错误恢复机制的多描述视频编码研究

Multiple Description Video Coding Research Based on Predictive Error Resilience

该文提出一种基于预测式错误恢复机制的多描述视频编码方法。在编码端通过预测单路解码可能产生的错误影响,为每个描述分配必要的冗余信息。考虑到视频编码压缩的效率问题,设计了不同的编码模式来处理冗余信息。解码端可以充分利用冗余信息,从而实现丢失视频帧的高质量恢复。实验表明,与传统时域采样方法相比,该方法具有更好的率失真性能。

A novel Multiple Description video coding scheme is proposed based on Predictive Error Resilience （MD-PER）. At the encoder, the possible error caused by the single-channel reconstruction can be predicted firstly, and then the necessary redundancy information is inserted for each description. In view of the compression efficiency, different coding modes are designed to compress the generated redundant information. At the decoder, the redundancy information can be applied to achieve high quality recovery of the lost video frames. Experimental results demonstrate that compared with the traditional temporal sampling method the proposed scheme achieves better rate-distortion performance.